Symptom Chart

WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the instrument cluster	Fuse(s) Circuitry Instrument cluster	GO to PIN POINT TEST A .
Incorrect fuel gauge indication - single fuel tank	Circuitry Fuel pump module Fuel level sensor Fuel tank Instrument cluster	GO to PIN POINT TEST B .
Incorrect fuel gauge indication - dual fuel tanks	Circuitry Fuel level sender Fuel tank Instrument cluster	GO to PIN POINT TEST X .
Incorrect voltage gauge indication	Circuitry Instrument cluster	GO to PIN POINT TEST C .
Incorrect oil pressure gauge indication	Circuitry Oil pressure switch Instrument cluster	GO to PIN POINT TEST D .
Incorrect temperature gauge indication	Instrument cluster Powertrain control module (PCM)	GO to PIN POINT TEST E .
Incorrect transmission temperature gauge indication	Transmission temperature sensor Powertrain control module (PCM) Instrument cluster	GO to PIN POINT TEST F .
Incorrect speedometer indication	Anti-lock brake system (ABS) concern ABS module Instrument cluster	GO to PIN POINT TEST G .
Incorrect tachometer indication	PCM Instrument cluster	GO to PIN POINT TEST H .
Trip odometer inoperative, speedometer OK	Instrument cluster	VERIFY the trip odometer reset button is not binding. If OK, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
Trip odometer inoperative, speedometer OK	Inaccurate configuration	REFER to MODULE CONFIGURATION for module configuration.
The safety belt warning indicator is inoperative (chime is operative)/does not operate correctly	Circuitry Safety belt switch (part of the safety belt buckle) Instrument cluster	GO to PIN POINT TEST I .
Inaccurate speedometer reading	Anti-lock brake system (ABS) module Instrument cluster	GO to PIN POINT TEST G .
The anti-lock brake system (ABS) warning indicator is never/always on	ABS module Instrument cluster	GO to PIN POINT TEST J .
The brake warning indicator is never on	Circuitry Brake warning indicator relay Anti-lock brake system (ABS) module Brake fluid level switch Parking brake switch Instrument cluster	GO to PIN POINT TEST K .
The brake warning indicator is always on	Circuitry Brake fluid level switch Parking brake switch Anti-lock brake system (ABS) module Instrument cluster	REFER to BRAKE SYSTEM-GENERAL INFORMATION to continue diagnosis of the brake warning indicator.
The malfunction indicator lamp (MIL) is never on	Powertrain control module (PCM) Instrument cluster	GO to PIN POINT TEST L .
The malfunction indicator lamp (MIL) is always on	Diagnostic trouble code (DTC) related concern(s)	REFER to the INTRODUCTION - GASOLINE article to continue diagnosis of the DTCs.
The charging system warning indicator is never on	Circuitry Charging system Instrument cluster	GO to PIN POINT TEST M .
The charging system warning indicator is always on	Circuitry Charging system	REFER to CHARGING SYSTEM - GENERAL INFORMATION to continue diagnosis of the charging system.
The air bag indicator warning is never/always on	Circuitry Restraint control module (RCM) Instrument cluster	GO to PIN POINT TEST N .
The high beam indicator is never on	Circuitry Instrument cluster	GO to PIN POINT TEST O .
The LH turn indicator is never on	Circuitry Instrument cluster	GO to PIN POINT TEST P .
The RH turn indicator is never on	Circuitry Instrument cluster	GO to PIN POINT TEST Q .
The 4X4 HIGH/LOW RANGE indicator is never/always on	Inaccurate instrument cluster configuration Circuitry 4X4 range select switch 4WD control module Instrument cluster	GO to PIN POINT TEST R .
The wait to start indicator is never/always on	Powertrain control module (PCM)	GO to PIN POINT TEST S .
The speed control indicator is never/always on	Powertrain control module (PCM) Instrument cluster	GO to PIN POINT TEST T .
The instrument cluster is inoperative	Fuse(s) Circuitry Instrument cluster	GO to PIN POINT TEST U .
The tow haul indicator is inoperative	Instrument cluster	GO to PIN POINT TEST V .
The electronic throttle control (ETC) indicator is never on	Powertrain control module (PCM) Instrument cluster	GO to PIN POINT TEST W .